On the Importance of In-situ Tracking the Microstructural Changes for Deeper Macro and Micro Scale Understanding of Workpiece Surface Integrity in Machining

主講人 : Prof. Dragos Axinte

Rather than observing and assessing, there is a need to explain more the mechanisms that lead to microstructural changes beneath the free surface after machining. The great majority of the studies follow a “post-mortem” approach in relation to workpiece surface integrity, i.e. analysis of a particular region of the sample without documenting its exact microstructure prior to cutting. While this is enough to certify the part’s quality after machining (most of the time with industry internal standards), this conventional approach has limited insights on the intricate mechanisms occurring within the superficial layers that are formed during machining.

The presentation focuses on methods and studies that document, with great detail (i.e. at grain level), the microstructural characteristics of the workpiece before and after cutting performed at both macro and micro scales. As such, macro cutting of groups of grains or micro cutting within single grains of the machined surface can be traced prior to and after cutting, which can, after detailed microstructural studies (SEM, EBSD, TKD, micro-mechanics, etc.), reveal interesting/new mechanisms that alter workpiece surface integrity.

主講人簡(jiǎn)介：

Rather than observing and assessing, there is a need to explain more the mechanisms that lead to microstructural changes under the free surface after machining. The great majority of the studies follow a “post-mortem” approach in relation to workpiece surface integrity, i.e. analysis of a particular region of the sample without documenting its exact microstructure prior to cutting. While this is enough to certify the part’s quality after machining (most of the time with industry internal standards), this conventional approach has limited insights on the intricate mechanisms occurring within the superficial  s that are formed during machining.

The presentation focuses on methods and studies that document, with great detail (i.e. at grain level), the microstructural characteristics of the workpiece before at after cutting performed at both macro  and micro scales. As such, macro cutting of groups of grains or micro cutting within single grains of the machined surface can be traced prior and after cutting and which can, after detailed microstructural studies (SEM, EBSD, TKD, micro-mechanics, etc) reveal interesting/new mechanisms that alter workpiece surface integrity.